Global Patent Index - EP 0029770 A1

EP 0029770 A1 19810603 - Control panel comprising capacitive tip keys.

Title (en)

Control panel comprising capacitive tip keys.

Title (de)

Bedienungstafel mit kapazitiven Berührungstasten.

Title (fr)

Tableau de commande comportant des touches capacitives à effleurement.

Publication

EP 0029770 A1 19810603 (FR)

Application

EP 80401609 A 19801112

Priority

FR 7928101 A 19791114

Abstract (en)

1. Control panel, keyboard or the like, in particular for a household apparatus comprising a plurality of touch-sensitive keys (1, T1 to T6), each of these keys being capable of initiating a control signal by means of the capacitive disturbance produced by the approach of the finger of a user, and each key comprising at least two electrodes (4, 5 ; 4a, 9, 5a, 9) interconnected by an insulating layer (6, 6A) which forms the accessible side of the key, and a rigid support (2, 3) comprising on the side opposed to the electrodes a screen (2) constituting an equipotential plane for the suppression of parasitic capacities, characterized in that the whole of said insulating layer (6, 6A) and said electrodes (4, 5 ; 4a, 9, 5a, 9) is deposited on an enamelled metal sheet (2, 3) which constitutes both said support imparting the required stiffness to the panel and said screen for suppressing the parasitic capacities.

Abstract (fr)

Ce tableau comporte des touches capacitives à effleurement (T1 à T7) qui sont chacune composées de couches alternativement conductrices et isolantes. Afin de réduire l'influence des capacités parasites, l'invention prévoit d'agencer les touches sur un support (12) isolant qui comporte à sa face opposée aux touches une couche conductrice formant plan équipotentiel relié de préférence à la masse. Le support est, de préférence, une tôle émaillée, munie à ses bords de conducteurs (14) à découvert reliant les armatures des touches à des connecteurs (16) de type standard. Application aux tableaux de commande des appareils ménagers.

IPC 1-7

H03K 17/96; F24C 7/08

IPC 8 full level

H03K 17/96 (2006.01)

CPC (source: EP)

H03K 17/962 (2013.01); H03K 2217/96023 (2013.01)

Citation (search report)

Designated contracting state (EPC)

BE DE GB IT NL

DOCDB simple family (publication)

EP 0029770 A1 19810603; EP 0029770 B1 19850424; DE 3070559 D1 19850530; FR 2469287 A1 19810522; FR 2469287 B1 19840420

DOCDB simple family (application)

EP 80401609 A 19801112; DE 3070559 T 19801112; FR 7928101 A 19791114